# Twilio SendGrid Email Marketing Campaigns vs Unlayer Comparison --- ## AI Generated Summary - **G2 reviewers report** that Twilio SendGrid Email Marketing Campaigns excels in providing a professional and user-friendly experience, with users highlighting its **easy customization** and straightforward interface for designing and sending emails. This makes it a solid choice for those looking for a comprehensive email marketing solution. - **Users say** that Unlayer stands out for its **intuitive drag-and-drop editor** , which allows for quick and efficient email template creation. Reviewers appreciate how this feature simplifies the process, even for complex layouts, making it a great option for users who prioritize ease of use. - **According to verified reviews** , Twilio SendGrid offers a robust set of features, including powerful APIs and a wide range of services beyond email marketing. This versatility appeals to businesses looking for a **one-stop communication solution** , as noted by users who value its comprehensive functionality. - **Reviewers mention** that while Unlayer provides good documentation and custom components, some users find it less feature-rich compared to Twilio SendGrid. This could be a consideration for those who need a more extensive set of tools for their email marketing campaigns. - **G2 reviewers highlight** that Twilio SendGrid has a strong presence in the small business market, with a significant portion of its reviews coming from this segment. This indicates that it is well-suited for small businesses looking for reliable email marketing solutions. - **Users report** that Unlayer's ease of setup and administration is a major advantage, with many finding it quick to get started and manage. This is particularly beneficial for users who may not have extensive technical expertise and need a platform that is **easy to embed and customize**. | | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Star Rating** | 4.0 out of 5 | 4.4 out of 5 | | **Total Reviews** | 325 | 57 | | **Largest Market Segment** | Small-Business (66.7% of reviews) | Small-Business (57.7% of reviews) | | **Entry Level Price** | No pricing available | Free | --- ## Top Pros & Cons ### Twilio SendGrid Email Marketing Campaigns Pros: - Ease of Use (9 reviews) - Easy Creation (6 reviews) Cons: - Missing Features (4 reviews) - Email Functionality (3 reviews) ### Unlayer Pros: - Ease of Use (24 reviews) - Templates (19 reviews) Cons: - Expensive (6 reviews) - Limited Features (6 reviews) --- ## Ratings Comparison | Rating | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Meets Requirements** | 8.5 (263 reviews) | 8.8 (50 reviews) | | **Ease of Use** | 8.2 (264 reviews) | 9.2 (50 reviews) | | **Ease of Setup** | 8.0 (136 reviews) | 9.2 (38 reviews) | | **Ease of Admin** | 8.0 (126 reviews) | 8.5 (21 reviews) | | **Quality of Support** | 7.6 (226 reviews) | 8.5 (44 reviews) | | **Has the product been a good partner in doing business?** | 8.2 (124 reviews) | 8.2 (20 reviews) | | **Product Direction (% positive)** | 7.7 (254 reviews) | 8.6 (49 reviews) | --- ## Pricing ### Twilio SendGrid Email Marketing Campaigns #### Entry-Level Pricing No pricing available #### Free Trial No information available ### Unlayer #### Entry-Level Pricing Plan: Free Price: Free Description: Forever Key Features: - Email Builder - Page Builder - Popup Builder [Browse all 5 editions](https://www.g2.com/products/unlayer/pricing) #### Free Trial Yes --- ## Features Comparison By Category ### Email Marketing | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | 8.2/10 | 185 | | **Unlayer** | N/A | N/A | #### Email Marketing | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Email and Mobile Preview** | 8.6 (157 reviews) ✓ Verified | Not enough data | | **Manage Email Lists** | 8.2 (164 reviews) ✓ Verified | Not enough data | | **High-Volume Sending** | 8.8 (158 reviews) ✓ Verified | Not enough data | | **Building and Personalizing Emails** | 8.3 (162 reviews) ✓ Verified | Not enough data | | **Sending Outbound Emails** | 8.8 (168 reviews) ✓ Verified | Not enough data | | **Manage Email Deliverability** | 8.4 (165 reviews) ✓ Verified | Not enough data | | **Automated Email Responses** | 8.2 (124 reviews) ✓ Verified | Not enough data | | **Multi-user Account** | 7.8 (69 reviews) ✓ Verified | Not enough data | | **Surveys** | 7.7 (51 reviews) ✓ Verified | Not enough data | #### Reporting & Analytics | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **A/B Testing** | 8.2 (117 reviews) ✓ Verified | Not enough data | | **Basic Reporting** | 8.3 (161 reviews) ✓ Verified | Not enough data | #### Generative AI | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **AI Text Generation** | 8.1 (15 reviews) | Not enough data | | **AI Text Summarization** | 7.9 (15 reviews) | Not enough data | #### Agentic AI - Email Marketing | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | | **Autonomous Task Execution** | Not enough data | Not enough data | | **Multi-step Planning** | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | #### Integration | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Data Import & Export Tools** | 8.2 (92 reviews) ✓ Verified | Not enough data | | **Integration APIs** | 8.7 (82 reviews) ✓ Verified | Not enough data | | **Breadth of Partner Applications** | 8.0 (61 reviews) ✓ Verified | Not enough data | | **CRM Integration** | 7.8 (38 reviews) ✓ Verified | Not enough data | | **Social Media Integration** | Feature Not Available | Not enough data | | **E-Commerce Integration** | 7.4 (31 reviews) ✓ Verified | Not enough data | ### Email Deliverability | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | 8.3/10 | 83 | | **Unlayer** | N/A | N/A | #### Diagnosis | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **IP Address ** | 8.7 (58 reviews) | Not enough data | | **Domains** | 8.5 (61 reviews) | Not enough data | | **Content ** | 8.4 (68 reviews) | Not enough data | | **Policy Compliance** | 8.5 (65 reviews) | Not enough data | #### Tracking | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Processing Time** | 8.3 (70 reviews) | Not enough data | | **Placement ** | 8.3 (60 reviews) | Not enough data | | **Open Rate** | 8.2 (72 reviews) | Not enough data | | **Time to Open** | 8.2 (64 reviews) | Not enough data | | **Alerts** | 8.1 (66 reviews) | Not enough data | #### Reporting | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Campaign Performance** | 8.4 (71 reviews) | Not enough data | | **Domain Reputation** | 8.1 (66 reviews) | Not enough data | | **Brand Reputation** | 8.1 (65 reviews) | Not enough data | | **Blacklist and Whitelist** | 8.0 (63 reviews) | Not enough data | #### Agentic AI - Email Deliverability | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | | **Adaptive Learning** | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | ### Email Template Builder | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | 7.7/10 | 60 | | **Unlayer** | 8.2/10 | 49 | #### Templates | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Text and Themes** | 7.9 (51 reviews) ✓ Verified | 9.0 (43 reviews) | | **Stock Images** | 7.0 (35 reviews) ✓ Verified | 7.8 (41 reviews) | | **Proofing** | 7.2 (43 reviews) ✓ Verified | 8.4 (41 reviews) | | **Mobile Responsive** | 8.4 (28 reviews) | 8.8 (45 reviews) | #### Edit | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Pre-Made** | 7.5 (47 reviews) ✓ Verified | 7.6 (43 reviews) | | **Build** | 8.0 (57 reviews) ✓ Verified | 9.3 (46 reviews) | | **HTML** | 8.1 (52 reviews) ✓ Verified | 8.9 (44 reviews) | #### Logistics | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Analytics** | 7.9 (55 reviews) ✓ Verified | 7.4 (37 reviews) | | **Issues** | 7.2 (42 reviews) ✓ Verified | 7.7 (37 reviews) | | **Integrations** | 8.0 (37 reviews) ✓ Verified | 8.4 (42 reviews) | | **Shareable Link** | 7.7 (23 reviews) | 8.4 (41 reviews) | #### Generative AI | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **AI Text Generation** | 7.7 (8 reviews) | 7.7 (35 reviews) | | **AI Text Summarization** | 7.1 (8 reviews) | 7.8 (34 reviews) | #### Agentic AI - Email Template Builder | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Autonomous Task Execution** | Not enough data | 7.2 (15 reviews) | | **Cross-system Integration** | Not enough data | 7.9 (16 reviews) | ### Email Testing | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | 8.4/10 | 22 | | **Unlayer** | N/A | N/A | #### Platform Basics | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Editing Platform** | 8.6 (21 reviews) | Not enough data | | **Spam Filter Testing** | 8.0 (21 reviews) | Not enough data | | **A/B Testing** | 8.0 (19 reviews) | Not enough data | | **Deliverability Testing** | 8.7 (20 reviews) | Not enough data | | **Design Testing** | 8.3 (20 reviews) | Not enough data | #### Platform Data | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Performance** | 8.5 (21 reviews) | Not enough data | | **Dashboard** | 8.4 (21 reviews) | Not enough data | | **Analytics** | 8.3 (21 reviews) | Not enough data | #### Agentic AI - Email Testing | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | | **Cross-system Integration** | Not enough data | Not enough data | | **Adaptive Learning** | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | | **Decision Making** | Not enough data | Not enough data | ### Pop-Up Builder | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | N/A | N/A | | **Unlayer** | N/A | N/A | #### Design and Customization | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Pre-Designed Templates** | Not enough data | Not enough data | | **Pop-Up Types** | Not enough data | Not enough data | | **No-Code Customization** | Not enough data | Not enough data | | **Mobile Optimized** | Not enough data | Not enough data | #### Campaigns | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Targeting** | Not enough data | Not enough data | | **Triggered Campaigns** | Not enough data | Not enough data | | **A/B Testing** | Not enough data | Not enough data | | **Analytics** | Not enough data | Not enough data | #### Integrations | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **CRM/Email Integrations** | Not enough data | Not enough data | | **WCM Integrations** | Not enough data | Not enough data | | **E-Commerce Integrations** | Not enough data | Not enough data | | **Social Media Integrations** | Not enough data | Not enough data | #### Generative AI | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **AI Text Generation** | Not enough data | Not enough data | #### Agentic AI - Vulnerability Scanner | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | | **Proactive Assistance** | Not enough data | Not enough data | ### Document Generation | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | N/A | N/A | | **Unlayer** | N/A | N/A | #### Data Sources | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Software** | Not enough data | Not enough data | | **Spreadsheets** | Not enough data | Not enough data | | **Documents** | Not enough data | Not enough data | #### Generation | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Templates** | Not enough data | Not enough data | | **Automation** | Not enough data | Not enough data | | **Branding** | Not enough data | Not enough data | #### Delivery | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Workflow** | Not enough data | Not enough data | | **Schedule** | Not enough data | Not enough data | | **Batch** | Not enough data | Not enough data | #### Generative AI | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **AI Text Generation** | Not enough data | Not enough data | | **AI Text Summarization** | Not enough data | Not enough data | | **AI Text-to-Image** | Not enough data | Not enough data | | **AI Image-to-Text** | Not enough data | Not enough data | #### Agentic AI - Document Generation | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Autonomous Task Execution** | Not enough data | Not enough data | ### Landing Page Builders | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | N/A | N/A | | **Unlayer** | 7.7/10 | 5 | #### Page Customization | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Drag and Drop** | Not enough data | 9.7 (5 reviews) | | **Templates** | Not enough data | 9.0 (5 reviews) | | **Advanced Customization** | Not enough data | 9.7 (5 reviews) | | **Content Library** | Not enough data | 8.0 (5 reviews) | #### Page Optimization | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **A/B Testing** | Not enough data | Not enough data | | **Mobile Responsive** | Not enough data | 9.3 (5 reviews) | | **Web Analytics** | Not enough data | 6.0 (5 reviews) | | **SEO** | Not enough data | 7.7 (5 reviews) | #### Integrations | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **E-Commerce Integration** | Not enough data | 5.0 (5 reviews) | | **Email Marketing Integration** | Not enough data | 5.7 (5 reviews) | | **Domain Integration** | Not enough data | Not enough data | #### Generative AI | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **AI Text Generation** | Not enough data | 6.7 (5 reviews) | #### Agentic AI - Landing Page Builders | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Cross-system Integration** | Not enough data | Not enough data | ### Document Creation | Product | Score | Reviews | |---|---|---| | **Twilio SendGrid Email Marketing Campaigns** | N/A | N/A | | **Unlayer** | N/A | N/A | #### Design | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Graphics** | Not enough data | Not enough data | | **Templates** | Not enough data | Not enough data | | **Themes** | Not enough data | Not enough data | #### Collaboration | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Multi-User Collaboration** | Not enough data | Feature Not Available | | **Real-Time Communication** | Not enough data | Not enough data | #### File Types | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Export** | Not enough data | Not enough data | | **Import** | Not enough data | Not enough data | | **Web Publishing** | Not enough data | Feature Not Available | #### Edit & Revise | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Revision History** | Not enough data | Not enough data | | **Suggestion Mode** | Not enough data | Not enough data | | **Document Editor** | Not enough data | Not enough data | #### Integrate & Embed | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Calendar** | Not enough data | Not enough data | | **Website** | Not enough data | Not enough data | | **Applications** | Not enough data | Not enough data | #### Operating System | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **PC Operating System** | Not enough data | Not enough data | | **Mac Operating System** | Not enough data | Not enough data | | **Linux Operating System** | Not enough data | Not enough data | #### Generative AI | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **AI Text Generation** | Not enough data | Not enough data | | **AI Text Summarization** | Not enough data | Not enough data | | **AI Text-to-Image** | Not enough data | Not enough data | | **AI Text-to-Speech** | Not enough data | Not enough data | | **AI Image-to-Text** | Not enough data | Not enough data | #### Agentic AI - Document Creation | Feature | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Proactive Assistance** | Not enough data | Not enough data | --- ## Categories **Shared Categories (1):** [Email Template Builder Software](https://www.g2.com/categories/email-template-builder) **Unique to Twilio SendGrid Email Marketing Campaigns (3):** [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability), [Email Marketing Software](https://www.g2.com/categories/email-marketing), [Email Testing Software](https://www.g2.com/categories/email-testing) **Unique to Unlayer (4):** [Pop-Up Builder Software](https://www.g2.com/categories/pop-up-builder), [Document Generation Software](https://www.g2.com/categories/document-generation), [Landing Page Builders](https://www.g2.com/categories/landing-page-builders), [Document Creation Software](https://www.g2.com/categories/document-creation) --- ## Reviewer Demographics ### By Company Size | Segment | Twilio SendGrid Email Marketing Campaigns | Unlayer | |---|---|---| | **Small-Business** | 66.7% | 57.7% | | **Mid-Market** | 26.0% | 32.7% | | **Enterprise** | 7.3% | 9.6% | ### By Industry #### Twilio SendGrid Email Marketing Campaigns - **Information Technology and Services:** 16.8% - **Marketing and Advertising:** 12.3% - **Computer Software:** 9.0% - **Financial Services:** 7.4% - **Internet:** 4.8% - **Real Estate:** 3.5% - **Health, Wellness and Fitness:** 3.2% - **Education Management:** 2.3% - **Retail:** 1.9% - **Consumer Services:** 1.6% - **Other:** 37.1% #### Unlayer - **Health, Wellness and Fitness:** 23.1% - **Computer Software:** 21.2% - **Information Technology and Services:** 7.7% - **Marketing and Advertising:** 5.8% - **Leisure, Travel & Tourism:** 5.8% - **Accounting:** 3.8% - **Real Estate:** 3.8% - **Online Media:** 3.8% - **Automotive:** 3.8% - **Events Services:** 3.8% - **Other:** 17.3% --- ## Alternatives ### Alternatives to Twilio SendGrid Email Marketing Campaigns - [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2605 reviews) - [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12982 reviews) - [ActiveCampaign](https://www.g2.com/products/activecampaign/reviews) — 4.4/5 stars (14718 reviews) - [Constant Contact](https://www.g2.com/products/constant-contact/reviews) — 4.1/5 stars (7413 reviews) - [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews) — 4.1/5 stars (731 reviews) - [Instantly](https://www.g2.com/products/instantly/reviews) — 4.8/5 stars (4126 reviews) - [MailerLite](https://www.g2.com/products/mailerlite/reviews) — 4.6/5 stars (1111 reviews) - [Litmus](https://www.g2.com/products/litmus/reviews) — 4.6/5 stars (447 reviews) - [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.5/5 stars (1357 reviews) - [Zoho Campaigns](https://www.g2.com/products/zoho-campaigns/reviews) — 4.3/5 stars (1041 reviews) ### Alternatives to Unlayer - [RGE Studio](https://www.g2.com/products/rge-studio/reviews) — 4.7/5 stars (349 reviews) - [Stripo.email](https://www.g2.com/products/stripo-email/reviews) — 4.8/5 stars (168 reviews) - [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.5/5 stars (1357 reviews) - [MailerLite](https://www.g2.com/products/mailerlite/reviews) — 4.6/5 stars (1111 reviews) - [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2605 reviews) - [SendPulse](https://www.g2.com/products/sendpulse/reviews) — 4.6/5 stars (716 reviews) - [ActiveCampaign](https://www.g2.com/products/activecampaign/reviews) — 4.4/5 stars (14718 reviews) - [Constant Contact](https://www.g2.com/products/constant-contact/reviews) — 4.1/5 stars (7413 reviews) - [Litmus](https://www.g2.com/products/litmus/reviews) — 4.6/5 stars (447 reviews) - [Zoho Campaigns](https://www.g2.com/products/zoho-campaigns/reviews) — 4.3/5 stars (1041 reviews) --- ## Top Discussions ### Twilio SendGrid Email Marketing Campaigns - Title: [ood softwear or email marketing plateform](https://www.g2.com/discussions/ood-softwear-or-email-marketing-plateform) — 1 comment, 1 upvote > **Top comment:** "Good day everyone on this platform I wanna use this medium to express how you can recover your lost fund from forex, binary options scam companies or fake..." - Title: [Is anyone having issues with Sendgrid](https://www.g2.com/discussions/15540-is-anyone-having-issues-with-sendgrid) — 1 comment, 1 upvote > **Top comment:** "We have not had any issues. SendGrid is the most stable API we interface with. I do not believe they miss-sell their quotas. Each email we send is..." - Title: [How can we integrate with Facebook leads ads ?](https://www.g2.com/discussions/12658-how-can-we-integrate-with-facebook-leads-ads) — 1 comment, 1 upvote > **Top comment:** "Yes you can" - Title: [Does Marketing Campaigns offer access to free email templates?](https://www.g2.com/discussions/beautifully-responsive-templates) — 1 comment, 1 upvote *(includes official response)* > **Top comment:** "Whether you're editing using code, visual drag and drop or a mix of both, Marketing Campaigns offers a library of beautifully flexible and responsive..." - Title: [Does Marketing Campaigns support both WYSIWYG, visual drag and drop editing as well as options for HTML code?](https://www.g2.com/discussions/design-vs-code-editing) — 1 comment, 1 upvote *(includes official response)* > **Top comment:** "Yes! With Marketing Campaigns, whether you prefer building campaigns visually, using HTML or a mix of both, we've got you covered. Our powerful,..." ### Unlayer No discussions available for this product. --- **Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/twilio-sendgrid-email-marketing-campaigns-vs-unlayer)