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Notes on B2B outreach and deliverability

Practical guides, comparisons and checklists on cold email, SMTP and getting to the inbox.

Comparisons SMTP2GO vs Bulko: SMTP Relay Pricing and Features Compared (2026) SMTP2GO starts at $15 a month for 10,000 emails with a free plan of 1,000; Bulko sells 20,000 SMTP emails for $15 once, with no expiry. We compare pricing from 5k to 150k emails, ports, set… Oct 8, 20267 min read

Comparisons SendGrid vs Bulko: SMTP Relay Pricing and Features Compared (2026) SendGrid starts at $19.95 per month; Bulko sells 20,000 SMTP emails for $15 once, with no expiry. We compare pricing at 5k to 150k emails, setup, ports and payment options, and say honestly… Oct 8, 20267 min read Comparisons Mailgun vs Bulko: SMTP Relay Pricing and Features Compared (2026) Mailgun Basic starts at $15 a month for 10,000 emails; Bulko sells 20,000 SMTP emails for $15 once, with no expiry. Here is the pricing math from 5k to 150k emails, the setup steps, and an … Oct 8, 20267 min read Comparisons Brevo vs Bulko: SMTP Relay Pricing and Features Compared (2026) Brevo is a full marketing platform with a free plan of 300 emails a day; Bulko is a prepaid SMTP relay that sells 20,000 emails for $15 once. We compare pricing from 5k to 150k emails, setu… Oct 8, 20267 min read Comparisons Amazon SES vs Bulko: SMTP Relay Pricing and Features Compared (2026) Amazon SES is far cheaper per email, but it comes with an AWS account, IAM credentials and a sandbox review. Bulko costs $15 for 20,000 emails, prepaid, with credentials right after payment… Oct 8, 20267 min read Email Infrastructure SMTP Server for Bulk Email in 2026: Where to Get One, Cost, and Avoiding Spam Regular mailboxes cap SMTP sending at a few hundred emails a day. Here is which SMTP server to use for bulk email, what it costs, and what to set up so your mail reaches the inbox. Oct 8, 20265 min read Email Infrastructure Port 465 or 587: What Is the Difference and Which to Use for SMTP Both ports encrypt mail submission; they differ only in when TLS starts. Here is how 465 (SSL) and 587 (STARTTLS) compare, when 2525 helps, and why port 25 is usually blocked. Oct 8, 20265 min read Email Infrastructure Amazon SES from Russia in 2026: Access, Restrictions and Alternatives AWS stopped accepting new sign-ups from Russia in March 2022 and Russian cards are declined. Here is what that means for Amazon SES and which sending services work instead. Oct 8, 20266 min read Email Deliverability Best Email Warm-up Services to Boost Deliverability Boost email deliverability and sender reputation. Top warm-up services like Warmup Inbox and Mailreach improve cold outreach success. Oct 6, 202610 min read Cold Outreach Optimizing Your Cold Email Subject Lines for Higher Open Rates Boost cold email open rates. Personalize, create curiosity, state value, and be brief for compelling subject lines. Oct 5, 20267 min read Cold Outreach Optimizing Your B2B Cold Email Strategy with ICP & Buyer Personas Define your target audience with ICP & buyer personas. Personalize emails for higher engagement & conversions. Sep 30, 202610 min read Comparisons Best Mailgun Alternatives in 2026 (Cheaper, No Subscription) The best Mailgun alternatives in 2026 by use case: Bulko for no-subscription pay-as-you-go, Amazon SES for scale, Brevo and SMTP2GO for free, Postmark for transactional, SendGrid for a deve… Sep 28, 20264 min read

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