Compare: Email Marketing Campaigns in Gmail: Gumbamail vs MailKing: Email Campaigns in Gmail by cloudHQ

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Metric	Email Marketing Campaigns in Gmail: Gumbamail	MailKing: Email Campaigns in Gmail by cloudHQ
User count	5,000	10,000
Average rating	3.62	4.58
Rating count	79	121
Last updated	2026-06-17	2026-06-02
Size	1.24 MB	0.56 MB
Version	1.9.4	1.0.2.5

Short description	Send mass email marketing campaigns and newsletters directly from Gmail with Gumbamail. Schedule, design, and manage mailings easily, without limits.	Send mass emails directly from Gmail with MailKing. Access templates, drag‑and‑drop editor, HTML editor, merge tags, lists, and analytics.
Full summary	Gumbamail is a Chrome extension that empowers you to run professional email marketing campaigns directly within Gmail. Ideal for sales professionals, small businesses, and freelancers, it simplifies creating, scheduling, and sending mass emails without ever leaving your inbox. With over 100 customizable, responsive templates and seamless integration with Google Sheets and Gmail contact groups, managing mailing lists has never been easier. Unlike other services, Gumbamail imposes no sending limits thanks to its own backend system, allowing you to send as many emails as you need. The extension offers a 100% free account with up to 250 emails per month and flexible plans for larger needs. If you're looking to boost productivity and streamline your email marketing efforts directly from Gmail, Gumbamail is the perfect tool.	MailKing brings mass emailing to Gmail. Run campaigns without leaving your inbox, with templates, a drag‑and‑drop editor, merge tags, and real-time analytics to boost engagement. Build lists, sign‑up forms, and import templates from Mailchimp or HubSpot. Import CSVs from CRMs, perform mail merges, and schedule follow-ups—all within Gmail, with scalable sending and branding options.